Ross said: “Everywhere I go people keep saying: ‘Good luck at Eurovision.’ They say: ‘You can do it Engelbert.’

“How can people mistake me for Engelbert Humperdinck?

“How can people mistake me, in my youngish prime, for a 75-year-old?

“I look nothing like him. Well, good luck to him at Eurovision. But please stop comparing me because it’s giving me the hump a bit.” Meanwhile Engelbert, whose real name is Arnold Dorsey, is no stranger to lookalikes.

The singer, who will be flying the flag for the UK in Baku, Azerbaijan in May with his ballad Love Will Set You Free, has a huge global fan base.

In the Philippines there are more Engelbert tribute acts than any other pop stars, including Elvis Presley and The Beatles.

The star, whose most famous hit is the 1967 song Please Release Me, boasted he still had worldwide fame after more than 40 years in the business.

The ageing crooner said: “I have just come back from Dubai, Manila and Singapore, where I’ve had concerts.